<s>
PoDoFo	B-Language
is	O
a	O
software	O
library	O
and	O
tools	O
to	O
work	O
with	O
the	O
PDF	B-Application
file	I-Application
format	O
.	O
</s>
<s>
The	O
name	O
comes	O
from	O
the	O
first	O
two	O
letters	O
of	O
each	O
word	O
in	O
PDF	B-Application
's	O
spelled-out	O
form	O
(	O
Portable	B-Application
Document	I-Application
Format	I-Application
)	O
.	O
</s>
<s>
The	O
PoDoFo	B-Language
library	O
is	O
a	O
free	O
portable	O
C++	B-Language
library	O
which	O
includes	O
classes	O
to	O
parse	O
a	O
PDF	B-Application
file	I-Application
and	O
modify	O
its	O
contents	O
into	O
memory	O
.	O
</s>
<s>
PoDoFo	B-Language
includes	O
very	O
simple	O
classes	O
to	O
create	O
PDF	B-Application
files	I-Application
.	O
</s>
<s>
All	O
classes	O
are	O
documented	O
so	O
it	O
is	O
easy	O
to	O
start	O
writing	O
an	O
application	O
using	O
PoDoFo	B-Language
.	O
</s>
<s>
PoDoFo	B-Language
is	O
primarily	O
useful	O
for	O
applications	O
that	O
wish	O
to	O
do	O
lower-level	O
manipulation	O
of	O
PDF	B-Application
,	O
such	O
as	O
extracting	O
content	O
or	O
merging	O
files	O
.	O
</s>
<s>
It	O
is	O
also	O
useful	O
if	O
an	O
application	O
has	O
specific	O
requirements	O
for	O
its	O
PDF	B-Application
output	O
that	O
more	O
general	O
output-oriented	O
libraries	O
like	O
Cairo	B-Language
cannot	O
satisfy	O
.	O
</s>
<s>
Canvas/drawing	O
support	O
is	O
currently	O
very	O
limited	O
in	O
PoDoFo	B-Language
,	O
so	O
for	O
pure	O
output	O
tasks	O
a	O
library	O
like	O
Cairo	B-Language
will	O
be	O
more	O
suitable	O
.	O
</s>
<s>
PoDoFo	B-Language
cannot	O
render	O
PDF	B-Application
,	O
so	O
one	O
should	O
look	O
at	O
a	O
library	O
like	O
Poppler	B-Language
for	O
that	O
.	O
</s>
<s>
PoDoFo	B-Language
is	O
dependent	O
on	O
OpenSSL	B-Language
,	O
zlib	B-Language
,	O
freetype2	B-Application
,	O
fontconfig	B-Device
(	O
Unix	O
and	O
Mac	O
OS	O
X	O
only	O
)	O
,	O
libjpeg	B-Language
(	O
optional	O
)	O
,	O
libpng	B-Language
(	O
optional	O
)	O
and	O
LibTIFF	B-Library
(	O
optional	O
)	O
.	O
</s>
<s>
PoDoFo	B-Language
is	O
released	O
under	O
the	O
GNU	B-Application
Lesser	I-Application
General	I-Application
Public	I-Application
License	I-Application
(	O
LGPL	B-Application
)	O
.	O
</s>
<s>
The	O
tests	O
and	O
tools	O
which	O
are	O
included	O
in	O
PoDoFo	B-Language
are	O
licensed	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
